Christmas Ice Quake Hits Toronto

Christmas cryoseismsJust days after a massive ice storm hit the Greater Toronto Area (GTA), Christmas Eve ice quakes hit the area. The first reports of the loud booms hit Twitter feeds right around dinner Eastern Time, and the tweets peaked in numbers around midnight. Ice quakes were later reported being heard as early as 2 p.m. and as late as 1 a.m. Christmas Day morning.

The loud sharp-cracking booms were first thought to be sonic booms from comets or meteors entering the earth’s atmosphere hitting Toronto, Ontario or the Great Lake states. However there were no reports filed from the American Meteor Society ruling out comets and meteors as a possible cause. Earthquakes were also ruled out as the United States Geological Service did not register any Ontario seismic events on neither Christmas Eve nor Christmas Day, leaving an ice quake as the most likely cause.

An ice quake or frost quake is known as a scientific phenomenon called a “cryoseism.” Cryoseisms are caused during the start of a cold-snap by rapidly declining temperatures that suddenly freeze the groundwater. When water freezes it expands and the soil and rocks will split or crack. These cracks will release bursts of explosive energy that result in a kind of concussion wave of a loud sonic-like boom and also cause localized ground shaking. The phenomenon is more likely to occur after midnight and before dawn, when temperatures are most likely to be rapidly declining.

Even though cryoseisms are quite rare, they seem to occur more often in Ontario and the states bordering the Great Lakes. Sadowa, Ontario reported 12 cryoseisms on January 18, 2000 within two hours when temperatures neared -4 Fahrenheit or -20 Celsius.

The Northeastern U.S. states have had numerous reports of cryoseisms. Maine, Connecticut, Massachusetts, Vermont, New York, Indiana, Wisconsin and Ohio have all reported frost quakes in the past. Some of the earliest reports are of ice quakes in New England on February 5, 1908. An event in Danbury, Connecticut had residents awakening one morning to find cracks and fissures in a few of their streets.

Some of the latest reports in the U.S. are from 2007 in Ohio and 2011 in southwestern Ohio and Indiana.

Although they often mimic a seismic earthquake, the mostly mild tremors usually don’t usually cause any damage or injury.

Temperatures just north of Toronto were very chilly on Christmas Eve which likens the fact that what residents felt and heard were cryoseisms. Sutton, Richmond Hill, and Newmarket, all reported temperatures on Christmas Eve of -20 C or colder.

Many areas around the Great Lakes had recently been hit with an ice storm just a few days before Christmas Eve. The storm created much damage in the areas hit snapping limbs from trees and weighing wires and cables down past their limits. The ice storm coated everything in the region under a sheet of ice and up to 115,000 people have spent Christmas without power.

Neighboring provinces and states have been sending hydro workers to Ontario to help restore power to the many. The province of Manitoba sent 42 hydro workers to Toronto on Christmas Eve. The workers are planning on staying to help restore the downed lines until January 6th. Mayor Rob Ford stated that 100 hydro trucks and workers were also being sent from Ottawa, Windsor, and Michigan.

There have not been any more reported ice quakes in the Toronto area since the Christmas Eve events.

By Brent Matsalla

Winnipeg Free Press
Global News
City News
680 News

10 Responses to "Christmas Ice Quake Hits Toronto"

  1. M.L.   January 3, 2014 at 6:58 am

    We heard same booms last night after 1:00am and continuing through the night, allthough not as strong as the one at Christmas time. Its interesting to find out what these noises are, learn something new every day.

  2. Armando Martins   January 3, 2014 at 5:24 am

    December 03, 2014

    Arounde 1:30 AM in Maple Ont. I heard he loud boom lookslike something fall inside the house ,and 5:00 Am I heard another loud boom the last one was around 5:30 Am same day Dec.03-2014

  3. Keith Wood   January 3, 2014 at 5:11 am

    We in Brampton have been hearing them all night!!!

  4. Melissa Russell   January 2, 2014 at 11:30 pm

    Ice quakes in Bowmanville. 2 a.m and now another big boom. Can’t sleep.

  5. Da   January 2, 2014 at 10:52 pm

    We had a few quakes tonight first one at 1:30am and 2nd not to long after in nobelton, ontario

  6. robert   December 27, 2013 at 6:30 pm

    i heard the same like something hit the roof and im in trenton ontario we learn something new every day

  7. Tess   December 27, 2013 at 4:30 pm

    Live in Richmond Hill. Heard a loud boom around 1:30am Dec 25th and felt like the house shook. I thought something had fallen on the roof or that pipes had burst. Couldn’t figure out what had happened. Good to have an explanation.

  8. Jacquie   December 26, 2013 at 6:01 pm

    Live in Minden Ont .heard a loud boom about 2 hours ago

  9. Doris Sego   December 26, 2013 at 4:30 pm

    About the same time here, 9:30 or so, Christmas Eve, then again, about a hour later. Loud thuds, we couldn’t figure out what caused the noise. Thought it might have been Santa…..

  10. A SIlve   December 26, 2013 at 3:46 pm

    Here in Bramoton I heard a crazy loud boom Xmas eve around 10 pm, then around 2am Xmas morn. House shook, even making ice come sliding off roof. I thought something had fallen on house.

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